Results 1 to 10 of about 474,770 (219)

The Quaternary slip rate of the Yangsan Fault offshore the SE Korean Peninsula and implications for seismic hazard assessment

Geomatics, Natural Hazards & Risk, 2021
The Yangsan Fault, a NNE-trending strike-slip fault, is a pronounced active structure in the Korean Peninsula which recently generated an earthquake with moment magnitude MW 5.5 (ML 5.8) that was the largest instrumentally recorded event in Korea.
Seonghoon Moon, Han-Joon Kim, Chungho Kim, Hyunggu Jun, Sang-Hoon Lee, Hyeong-Tae Joo, Kwang-Hee Kim   +6 more
doaj   +1 more source

Optimization of satellite resource scheduling under regional target coverage conditions

Open Astronomy, 2022
This study presented a mathematical description of an arbitrary shape area, and after analyzing the characteristics of the near-polar orbital co-ground trajectory constellation that satisfies the revisit interval constraint, an optimization model of the ...
Liu Kaixi, Wang Yajie, Zhang Baohui, Liu Hu, Wang Xu, Wei Bin   +5 more
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Experimental study of the effect of fallen leaf shading on the polarization characteristics of photovoltaic modules

SN Applied Sciences, 2023
Coverings have an important impact on the output and safety of photovoltaic (PV) modules. However, due to the complex on-site environment and difficult identification, it is difficult to obtain timely and effective cleaning.
Darong Zhu, Duanbiao Wang, Fangbin Wang, Xue Gong, Gang Yang, Ruiyang Yan   +5 more
doaj   +1 more source

Fault rock heterogeneity can produce fault weakness and reduce fault stability [PDF]

Nature Communications, 2022
Geological heterogeneity is abundant in crustal fault zones; however, its role in controlling the mechanical behaviour of faults is poorly constrained. Here, we present laboratory friction experiments on laterally heterogeneous faults, with patches of strong, rate-weakening quartz gouge and weak, rate-strengthening clay gouge. The experiments show that
John D. Bedford, Daniel R. Faulkner, Nadia Lapusta   +2 more
openaire   +5 more sources

Hazardous Chemical Accident Prevention Based on K-Means Clustering Analysis of Incident Information

IEEE Access, 2020
Hazardous chemicals are inflammable, explosive, and/or toxic and are prone to accidental leakage, fire, and explosion during production, storage, and transportation.
Fujie Deng, Wunan Gu, Wenwen Zeng, Zhenghui Zhang, Feng Wang   +4 more
doaj   +1 more source

A Novel Monitoring Strategy Combining the Advantages of NPE and GMM

IEEE Access, 2020
Semiconductor manufacturing process data usually have multimodel and multiphase characteristics which do not meet the application assumptions in neighborhood preserving embedding (NPE).
Cheng Zhang, Xunian Dai, Xiaofang Zheng, Yuan Li   +3 more
doaj   +1 more source

Fault Detection in the Tennessee Eastman Benchmark Process Using Principal Component Difference Based on K-Nearest Neighbors

IEEE Access, 2020
Industrial data usually have nonlinear or multimodal characteristics which do not meet the data assumptions of statistics in principal component analysis (PCA). Therefore, PCA has a lower fault detection rate in industrial processes.
Cheng Zhang, Qingxiu Guo, Yuan Li
doaj   +1 more source

Correlation of Seismicity With Faults in the South Korea Plateau in the East Sea (Japan Sea) and Seismic Hazard Assessment

Frontiers in Earth Science, 2022
The South Korea Plateau (SKP) is a structural high at the eastern continental margin of the Korean Peninsula. Earthquakes occur frequently in the SKP although they are not larger than ML 5.0 in magnitude.
Han-Joon Kim, Seonghoon Moon, Hyeong-Tae Jou, Kwang-Hee Kim, Bo Yeon Yi   +4 more
doaj   +1 more source

Remaining Useful Life Prediction for Rotating Machinery Based on Optimal Degradation Indicator

Shock and Vibration, 2017
Remaining useful life (RUL) prediction can provide early warnings of failure and has become a key component in the prognostics and health management of systems.
Aisong Qin, Qinghua Zhang, Qin Hu, Guoxi Sun, Jun He, Shuiquan Lin   +5 more
doaj   +1 more source

A Novel Hybrid-Fuel Storage System of Compressed Air Energy for China

Energies, 2014
Compressed air energy storage (CAES) is a large-scale technology that provides long-duration energy storage. It is promising for balancing the large-scale penetration of intermittent and dispersed sources of power, such as wind and solar power, into ...
Wenyi Liu, Linzhi Liu, Gang Xu, Feifei Liang, Yongping Yang, Weide Zhang, Ying Wu   +6 more
doaj   +1 more source